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  <title>返回路径中的文件名部分</title>
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  <div id="layout-content"><div id="function.basename" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">basename</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">basename</span> &mdash; <span class="dc-title">返回路径中的文件名部分</span></p>

 </div>
 
  <div class="refsect1 description" id="refsect1-function.basename-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>basename</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$path</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$suffix</code><span class="initializer"> = &quot;&quot;</span></span>): <span class="type">string</span></div>

  <p class="para rdfs-comment">
   给出一个包含有指向一个文件的全路径的字符串，本函数返回基本的文件名。
  </p>
     <blockquote class="note"><p><strong class="note">注意</strong>: 
   <p class="para">
    <span class="function"><strong>basename()</strong></span> 纯粹基于输入字符串操作，
    它不会受实际文件系统和类似 &quot;<code class="literal">..</code>&quot; 的路径格式影响。
   </p>
  </p></blockquote>
  <div class="caution"><strong class="caution">警告</strong>
   <p class="para">
    <span class="function"><strong>basename()</strong></span> 是本地化的，所以如果要正确处理多字节字符的路径，需要用
    <span class="function"><a href="function.setlocale.html" class="function">setlocale()</a></span> 正确设置匹配的 locale。如果 <code class="parameter">path</code>
    包含当前区域设置无效的字符，<span class="function"><strong>basename()</strong></span> 的行为未定义。
   </p>
  </div>
 </div>

 
 <div class="refsect1 parameters" id="refsect1-function.basename-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">path</code></dt>

     <dd>

      <p class="para">
       一个路径。
      </p>
      <p class="para">
       在 Windows
  中，斜线（<code class="literal">/</code>）和反斜线（<code class="literal">\</code>）都可以用作目录分隔符。在其它环境下是斜线（<code class="literal">/</code>）。
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">suffix</code></dt>

     <dd>

      <p class="para">
       如果文件名是以
  <code class="parameter">suffix</code> 结束的，那这一部分也会被去掉。
      </p>
     </dd>

    
   </dl>

  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.basename-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回指定 <code class="parameter">path</code> 的基本名称。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.basename-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-2138">
    <p><strong>示例 #1 <span class="function"><strong>basename()</strong></span> 例子</strong></p>
        <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #DD0000">"1)&nbsp;"</span><span style="color: #007700">.</span><span style="color: #0000BB">basename</span><span style="color: #007700">(</span><span style="color: #DD0000">"/etc/sudoers.d"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">".d"</span><span style="color: #007700">).</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"2)&nbsp;"</span><span style="color: #007700">.</span><span style="color: #0000BB">basename</span><span style="color: #007700">(</span><span style="color: #DD0000">"/etc/sudoers.d"</span><span style="color: #007700">).</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"3)&nbsp;"</span><span style="color: #007700">.</span><span style="color: #0000BB">basename</span><span style="color: #007700">(</span><span style="color: #DD0000">"/etc/passwd"</span><span style="color: #007700">).</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"4)&nbsp;"</span><span style="color: #007700">.</span><span style="color: #0000BB">basename</span><span style="color: #007700">(</span><span style="color: #DD0000">"/etc/"</span><span style="color: #007700">).</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"5)&nbsp;"</span><span style="color: #007700">.</span><span style="color: #0000BB">basename</span><span style="color: #007700">(</span><span style="color: #DD0000">"."</span><span style="color: #007700">).</span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo&nbsp;</span><span style="color: #DD0000">"6)&nbsp;"</span><span style="color: #007700">.</span><span style="color: #0000BB">basename</span><span style="color: #007700">(</span><span style="color: #DD0000">"/"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程会输出：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
1) sudoers
2) sudoers.d
3) passwd
4) etc
5) .
6) 
</pre></div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.basename-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.dirname.html" class="function" rel="rdfs-seeAlso">dirname()</a> - 返回路径中的目录部分</span></li>
    <li class="member"><span class="function"><a href="function.pathinfo.html" class="function" rel="rdfs-seeAlso">pathinfo()</a> - 返回文件路径的信息</span></li>
   </ul>
  </p>
 </div>


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